We support drop shipping! Style A Rolton K400 Specification:Suitable for: teaching, tour guides, promotions, meetingsSupport USB disk and TF card to play musicAudio power: >5WBattery capacity: 1200mAhCharging: use standard USB 5V (can use mobile phone charger)Rolton K400 Mini size:H 8.5cm * W 85cm * D 3.4cmH 3.3inch* W 3.3inch* D 1.2inchDetachable 18650 battery:The battery capacity is 1200mAh. It can be used for 8 hours. Play music for about 4-8 hours (volume 50%-80%).Charging using a standard USB cable:Can be charged using a variety of standard USB chargers1) It is recommended to share the mobile phone charger for charging.2) Charger current is greater than 500mAKnob volume control:The knob controls the volume, which is very convenient for most users.RoltonK400 Packing list:1 * K400 loudspeaker1 * 1200mAh battery1 * Profeional Wired headset Microphone1 * Instruction manual1 * USB charging cable (data cable)1 * Waistband Belt Style B Details:GOOD HELPER FOR YOU: Amplify your sound in crowded occasions. This voice amplifier can provide 5w clear and soft sound to cover about 1000 square meters, let everyone hear what you say.HIGH SOUND QUALITY: Surround 3D sound field, provides high sound reproduction and clearer sound quality, make your voice clear and soft, and will not produce harsh noises.SMALL AND PORTABLE: The size is only 4x3x1in, compact and lightweight, it will not burden you too much. Comes with an adjustable strap, allows you to wear it on the waist or hang around the neck.MUSIC PLAYER FUNCTION: It supports USB flash drive playback and TF card playback, you can repeat a single tune, loop all music, and switch songs/recording content, you will never mi any important information again!WIDELY USE: Great for teachers, tour guides, physical trainers, and anyone who needs to improve their sound. For claroom, lectures, speech, training, meeting, shopping mall, etc.FUNCTIONS:1. This voice amplifier can provide 5w clear and soft sound to cover about 1000 square meters, let everyone hear what you say.2. Compact size and lightweight, comes with an adjustable strap, allows you to wear it on the waist or hang around the neck, easy to carry around.3. It supports USB flash drive, TF card, phone and computer playback, you can repeat a single tune, loop all music, and switch songs/recording content.4. 2400mAh Large capacity rechargeable battery, only need to charge for 4 hours, can last for 4-6 hours.5. Surround 3D sound field, provides high sound reproduction and clearer sound quality, make your voice clear and soft, and will not produce harsh noises.6. With display screen, easy to read.7. With a headset microphone, release your hands so you can talk while doing other things.Specification:Material: ABSSize: 9.2 x 8.4 x 2.8 cm/3.62 x 3.31 x 1.10 inchPower: 5WBattry capacity: 2400mAhCharging time: 4hWorking time: 4-6 hoursLife time: up to 15 hoursPlayback mode: support USB flash drive playback and TF card playbackNote: Due to manual measurement, there may be small deviations.Available color: black, rose goldPlease tell us the color you want when you buy it, or else we will send it at randomHOW TO USE:1. Place the microphone in front of your mouth to obtain the maximum amplification effect.2. Do not whistle: keep a certain distance between the microphone and the speaker, and preferably facing each other.3. Put on a headset, hang the amplifier speaker on your waist, then turn it on, and finally gradually increase the volume as needed.Package:1 x Voice Amplifier1 x Microphone1 x Charging Cable1 x Waist Belt1 x User Manual Selfie Stick Appearance parameterProduct size 45 x 35 x 194~1045 mmBluetooth version Bluetooth 4.0Transmiion Frequency 2.4GHz-2.4835GHzWorking Voltage 3VBluetooth distance 10MBattery CR1632(CAN CHANGE)system Android 4.4 and above / iOS 5.1 and aboveHardware parametersMaterials ABS+Stainle Steel (Stainle Steel)Phone size 65-92mmTripod open to maximum height 990mmCharging cable*1 Gimbal Stabilizer Gimbal Stabilizer with Light